code: def __init__(self, loop=None):
      self.loop = loop or asyncio.get_event_loop()
      self.closed = False
  
      self._stopped_f = asyncio.Future(loop=self.loop)
  
file_path: catboost/contrib/python/prompt-toolkit/py2/prompt_toolkit/eventloop/asyncio_posix.py
imports: from __future__ import unicode_literals
  from ..terminal.vt100_input import InputStream
  from .asyncio_base import AsyncioTimeout
  from .base import EventLoop, INPUT_TIMEOUT
  from .callbacks import EventLoopCallbacks
  from .posix_utils import PosixStdinReader
  import asyncio
  import signal
label_desc: Use image node_id 1 to create a new PosixAsyncioEventLoop object from inherited base classes: EventLoop with example: obj = PosixAsyncioEventLoop(loop)